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CTS Fahrzeug-Dachsysteme

CTS Fahrzeug-Dachsysteme was an automotive Tier-1 supplier specializing in convertible-top and retractable-hardtop modules.

Last updated August 24, 2026

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Overview

CTS Fahrzeug-Dachsysteme was an automotive component supplier focused on roof systems for passenger vehicles. The company was established in 1995 as a 50/50 joint venture between Daimler-Benz and Porsche, giving it a position at the intersection of two major German automotive manufacturers and their premium-vehicle engineering requirements. Its business centered on the development and production of complete roof modules rather than consumer-facing automotive products. These systems included fabric convertible tops and retractable hardtop assemblies designed for open-top and coupe-convertible vehicles. As a Tier-1 supplier, CTS operated within the automotive original-equipment manufacturing chain. Its roof modules were integrated into vehicles produced by several international manufacturers and appeared across a broad range of vehicle segments, from compact convertibles to premium sports cars and luxury roadsters. Documented applications included models from Audi, Cadillac, Chevrolet, Ferrari, Fiat, Infiniti, Mercedes-Benz, Nissan, Opel, Peugeot, Porsche and related marques. The listed applications include the Cadillac XLR, Mercedes-Benz SLK and SL-Class, Peugeot 307 CC, Audi A5, Audi R8, Ferrari F430, Fiat 500, Nissan 370Z Roadster, Nissan Murano Cross Cabriolet, Porsche 911 Convertible and Porsche Boxster. The ownership structure changed during the company’s first decade. In September 2003, DaimlerChrysler sold its interest to Porsche, leaving Porsche as the sole owner of CTS. In November 2005, Porsche sold CTS to Magna, an international automotive supplier. Following that transaction, the business became associated with Magna Car Top Systems, reflecting its integration into Magna’s broader automotive-components activities. CTS is significant primarily as an engineering and manufacturing business rather than as a retail brand. Its value proposition was the ability to supply vehicle manufacturers with complete, production-ready roof modules and related systems for vehicles where packaging, structural integration, opening and closing mechanisms, weather protection and appearance were central design requirements. The available reference material does not provide sufficient information to establish a current standalone corporate identity, present headquarters, leadership roster, website, financial performance or continuing brand status. Accordingly, those fields are left unspecified.

History

CTS Fahrzeug-Dachsysteme was founded in 1995 as a joint venture between Daimler-Benz and Porsche. Each parent held half of the business. The venture was structured as a Tier-1 automotive supplier, concentrating on the production of roof modules for passenger vehicles. Rather than selling complete vehicles or aftermarket accessories, CTS supplied integrated roof assemblies to vehicle manufacturers for use in convertible and retractable-hardtop programs. The company’s product scope covered the principal roof architectures used in open-top passenger cars. Its documented work included convertible tops and retractable hardtops, with applications spanning premium automobiles, sports cars, luxury roadsters and smaller convertibles. Vehicle programs associated with CTS included the Mercedes-Benz SLK and SL-Class, Porsche 911 Convertible and Boxster, Audi A5 and R8, Cadillac XLR, Chevrolet Camaro and Corvette, Ferrari F430, Fiat 500, Infiniti G37 Convertible, Nissan 370Z Roadster and Murano Cross Cabriolet, Opel Astra Convertible and Peugeot 307 CC. These applications demonstrate that CTS supplied systems to multiple vehicle manufacturers rather than serving only one parent company’s brands. A major ownership change occurred in September 2003, when DaimlerChrysler sold its CTS shares to Porsche. The transaction ended the original 50/50 ownership arrangement and left Porsche as the sole owner. CTS then remained under Porsche ownership until November 2005, when Porsche sold the company to Magna. The acquisition placed the roof-system business within Magna’s automotive-supplier portfolio and led to its identification as Magna Car Top Systems. The available reference material does not document the detailed engineering milestones, manufacturing locations, workforce, revenue, current corporate structure or later product programs of the business. It also does not establish whether CTS Fahrzeug-Dachsysteme continues to operate as a distinct brand after its integration with Magna. Consequently, the company’s historical role as a specialist supplier is better documented than its present standalone identity.

  • 2005

    Magna acquires CTS

    [1]

    Porsche sells CTS to Magna, and the business becomes associated with Magna Car Top Systems.

  • 2003

    Porsche becomes sole owner

    [1]

    DaimlerChrysler sells its CTS shares to Porsche, ending the original equal-share ownership structure.

  • 1995

    CTS is established as a Daimler-Benz–Porsche joint venture

    [1]

    CTS Fahrzeug-Dachsysteme is founded as a 50/50 joint venture between Daimler-Benz and Porsche to supply automotive roof modules.

Products and positioning

An automotive Tier-1 engineering and manufacturing supplier specializing in complete convertible and retractable-hardtop roof modules for vehicle manufacturers.

  • Automotive roof systems

    Convertible-top modules

    CTS supplied complete convertible-top modules for passenger vehicles. These systems were integrated into production vehicles from manufacturers including Mercedes-Benz, Porsche, Audi, Ferrari, Fiat, Infiniti, Nissan, Opel and Peugeot. The documented programs range from compact and midsize convertibles to premium sports cars and luxury roadsters.

  • Automotive roof systems

    Retractable hardtop modules

    The company also produced retractable hardtop modules for vehicles requiring a roof that could transform between closed coupe-like and open configurations. CTS’s documented applications include the Cadillac XLR, Mercedes-Benz SLK and SL-Class, Peugeot 307 CC and other vehicle programs.

Brand decisions

  • 2005

    Porsche transfers CTS to MagnaM&A

    Background

    Porsche had become the sole owner of CTS after acquiring DaimlerChrysler’s interest in 2003. In 2005, Porsche chose to sell the roof-system supplier to Magna.

    Action taken

    Porsche sold CTS Fahrzeug-Dachsysteme to Magna in November 2005, after which the business was identified with Magna Car Top Systems.

    Aftermath

    The transaction moved CTS from Porsche ownership into Magna’s automotive-components organization. The available material does not establish the later standalone status or operating structure of the CTS name.

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